GEO Instrumentation
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Where every
millimetre counts

A dam moves. A bridge breathes. A containment structure deforms by a few tenths of a millimetre a year. Our sensors make those movements legible, year after year, without drifting.

Nuclear plants and facilities

Instrumentation and monitoring of nuclear civil engineering structures. Containment structures, base slabs and supporting structures are subject to regulated monitoring throughout the life of the facility.

  • Sensors embedded at the pour and unreachable afterwards: reliability is not negotiable
  • Deformation, temperature and pressure measurement
  • Monitoring over several decades, with the same equipment
Cooling towers of a power plant

Dams, bridges and tunnels

The heart of what we do. Monitoring of arch and gravity dams, surveillance of bridges and major structures, convergence monitoring in tunnels.

  • Crest displacements, joint opening, pore pressures
  • Instrumentation installed during construction and during refurbishment alike
  • Work in inspection galleries and at remote sites
Upstream face of a dam

Hydroelectric and industrial structures

Penstocks, generating plants, water intakes, spillway structures. Wherever a loaded structure has to be watched continuously.

  • Measurement under varying hydraulic load
  • Wet, submerged or freeze-thaw environments
  • Sensors built for installation in difficult conditions
Dam spillway in flood

LNG terminals and industrial sites

Monitoring of cryogenic tanks, containment basins and supporting structures. Extreme thermal conditions, where deformation measurement and temperature measurement cannot be separated.

  • Instrumentation of tanks and containment structures
  • Measurement in cryogenic environments
  • Monitoring of sensitive industrial structures
Liquefied natural gas tanks

Historic monuments and sensitive structures

Monitoring without damage. On a listed building, instrumentation has to be discreet, reversible, and fine enough to catch a slow movement before it becomes a defect.

  • Monitoring of cracks and structural defects
  • Non-destructive installation, removal without a trace
  • Monitoring during restoration works
Historic monument

Our teams work in France and abroad and support every installation, from design to measurement.

A structure to
instrument?

Describe your needs and we will come back to you with a proposal.

Contact us